{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{6}{c}}
\toprule
            &\multicolumn{2}{c}{\specialcell{Contemporaneous\\Effect (t)}}&\multicolumn{2}{c}{\specialcell{One Year\\Later (t+1)}}&\multicolumn{2}{c}{\specialcell{Previous Year\\(Placebo) (t-1)}}\\\cmidrule(lr){2-3}\cmidrule(lr){4-5}\cmidrule(lr){6-7}
            &\multicolumn{1}{c}{\specialcell{Number\\(1)}}&\multicolumn{1}{c}{\specialcell{IHS\\(2)}}&\multicolumn{1}{c}{\specialcell{Number\\(3)}}&\multicolumn{1}{c}{\specialcell{IHS\\(4)}}&\multicolumn{1}{c}{\specialcell{Number\\(5)}}&\multicolumn{1}{c}{\specialcell{IHS\\(6)}}\\
\midrule
\input{pairCosponA} \vspace{-1.2em} \\ & (.076) & (.021) & (.089) & (.028) & (.082) & (.022) \\ & [.27] & [.48] & [.66] & [.84] & [.13] & [.96] \\ & \{.19\} & \{.42\} &  \{.61\} & \{.77\} & \{.13\} & \{.98\} \\ \\[-5pt] \hline Observations & 35314 & 35314 & 23265 & 23265 & 23472 & 23472 \\ Session $\times$ Party Pair $\times$ Strata FE & Y & Y & Y & Y & Y & Y \\ Outcome Mean & 3.3 & 1.3 & 3.4 & 1.3 & 3.2 & 1.2 \\ Outcome S.d. & 4.8 & 1.1 & 5 & 1.2 & 4.8 & 1.1 \\ \toprule \multicolumn{7}{p{16cm}}{\footnotesize \textit{Notes:} Number is the total number of co-sponsorship links between the two MPs in a pair in a given session. IHS is the inverse hyperbolic sine transformation of Number. Neighbor is a dummy variable equal to one if the MPs in the pair are randomly assigned to sit next to each other during that session. Dyadic-robust standard errors are in parentheses and dyadic-robust p-values are in square brackets. Randomization inference p-values (1000 draws) are in curly brackets. Special sessions and a short session (2017) are excluded. For lead and lag specifications, sessions are also dropped where lead/lag would be a special/short session or a session in a different parliamentary term. Strata FE are dummy variables for whether both MPs in a pair were pre-assigned seats, one MP in a pair was pre-assigned a seat, or neither MP in a pair was pre-assigned a seat. *** p<0.01, ** p<0.05, * p<0.1.} \\ \end{tabular} }
